This post discusses an issue I had with Atlassian’s SourceTree software and my firewall. I originally thought that SourceTree was just slow and didn’t work well on Windows, but I recently found out it was actually my anti-virus and firewall that was causing the issues.

While working on an ASP.Net project at work, I found a strange “feature” (I’m more inclined to call it an annoyance) that is built into certain browsers. It seems that Firefox and WebKit have automatic port blocking built into them for specific ports. I was specifically trying to use port 6000 (a seemingly random, easy to remember port) but couldn’t access the web server. After a little searching, I managed to find some information and thought I’d share it.